{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical", "Disease"], "input": "Levodopa and the DA D2 - like receptor agonist , LY - 171555 ( [ 4aR - trans ] - 4 , 4a , 5 , 6 , 7 , 8 , 8a , 9 - o - dihydro - 5n - propyl - 2H - pyrazo lo - 3 - 4 - quinoline hydrochloride ) were also used for comparison ."}
{"Chemical": ["Levodopa", "DA", "LY - 171555", "[ 4aR - trans ] - 4 , 4a , 5 , 6 , 7 , 8 , 8a , 9 - o - dihydro - 5n - propyl - 2H - pyrazo lo - 3 - 4 - quinoline hydrochloride"], "Disease": []}